If you are looking for a more modern engine with less figgly and more up to date performance why not go with an LS? HP, development, after market support, adapter assistance, and well tested engine management modifications have already been done. HP and weight are not a problem. If you are dead set on DFI the LT engine would give you that but I hear that it is a big beast (not in the block or heads but in the accessory drives). Flame on!